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/* *
* (c) 2010-2019 Torstein Honsi
*
* License: www.highcharts.com/license
*/
'use strict';
import H from './Globals.js';
import './Utilities.js';
import './Color.js';
import './Legend.js';
import './Series.js';
import './Options.js';
var color = H.color,
LegendSymbolMixin = H.LegendSymbolMixin,
pick = H.pick,
Series = H.Series,
seriesType = H.seriesType;
/**
* Area series type.
*
* @private
* @class
* @name Highcharts.seriesTypes.area
*
* @augments Highcharts.Series
*/
seriesType(
'area',
'line',
/**
* The area series type.
*
* @sample {highcharts} highcharts/demo/area-basic/
* Area chart
* @sample {highstock} stock/demo/area/
* Area chart
*
* @extends plotOptions.line
* @excluding useOhlcData
* @product highcharts highstock
* @optionparent plotOptions.area
*/
{
/**
* Fill color or gradient for the area. When `null`, the series' `color`
* is used with the series' `fillOpacity`.
*
* In styled mode, the fill color can be set with the `.highcharts-area`
* class name.
*
* @sample {highcharts} highcharts/plotoptions/area-fillcolor-default/
* Null by default
* @sample {highcharts} highcharts/plotoptions/area-fillcolor-gradient/
* Gradient
*
* @type {Highcharts.ColorString|Highcharts.GradientColorObject|Highcharts.PatternObject}
* @product highcharts highstock
* @apioption plotOptions.area.fillColor
*/
/**
* Fill opacity for the area. When you set an explicit `fillColor`,
* the `fillOpacity` is not applied. Instead, you should define the
* opacity in the `fillColor` with an rgba color definition. The
* `fillOpacity` setting, also the default setting, overrides the alpha
* component of the `color` setting.
*
* In styled mode, the fill opacity can be set with the
* `.highcharts-area` class name.
*
* @sample {highcharts} highcharts/plotoptions/area-fillopacity/
* Automatic fill color and fill opacity of 0.1
*
* @type {number}
* @default {highcharts} 0.75
* @default {highstock} 0.75
* @product highcharts highstock
* @apioption plotOptions.area.fillOpacity
*/
/**
* A separate color for the graph line. By default the line takes the
* `color` of the series, but the lineColor setting allows setting a
* separate color for the line without altering the `fillColor`.
*
* In styled mode, the line stroke can be set with the
* `.highcharts-graph` class name.
*
* @sample {highcharts} highcharts/plotoptions/area-linecolor/
* Dark gray line
*
* @type {Highcharts.ColorString}
* @product highcharts highstock
* @apioption plotOptions.area.lineColor
*/
/**
* A separate color for the negative part of the area.
*
* In styled mode, a negative color is set with the
* `.highcharts-negative` class name.
*
* @see [negativeColor](#plotOptions.area.negativeColor)
*
* @sample {highcharts} highcharts/css/series-negative-color/
* Negative color in styled mode
*
* @type {Highcharts.ColorString|Highcharts.GradientColorObject|Highcharts.PatternObject}
* @since 3.0
* @product highcharts
* @apioption plotOptions.area.negativeFillColor
*/
/**
* Whether the whole area or just the line should respond to mouseover
* tooltips and other mouse or touch events.
*
* @sample {highcharts|highstock} highcharts/plotoptions/area-trackbyarea/
* Display the tooltip when the area is hovered
*
* @type {boolean}
* @default false
* @since 1.1.6
* @product highcharts highstock
* @apioption plotOptions.area.trackByArea
*/
/**
* When this is true, the series will not cause the Y axis to cross
* the zero plane (or [threshold](#plotOptions.series.threshold) option)
* unless the data actually crosses the plane.
*
* For example, if `softThreshold` is `false`, a series of 0, 1, 2,
* 3 will make the Y axis show negative values according to the
* `minPadding` option. If `softThreshold` is `true`, the Y axis starts
* at 0.
*
* @since 4.1.9
* @product highcharts highstock
*/
softThreshold: false,
/**
* The Y axis value to serve as the base for the area, for
* distinguishing between values above and below a threshold. The area
* between the graph and the threshold is filled.
*
* * If a number is given, the Y axis will scale to the threshold.
* * If `null`, the scaling behaves like a line series with fill between
* the graph and the Y axis minimum.
* * If `Infinity` or `-Infinity`, the area between the graph and the
* corresponing Y axis extreme is filled (since v6.1.0).
*
* @sample {highcharts} highcharts/plotoptions/area-threshold/
* A threshold of 100
* @sample {highcharts} highcharts/plotoptions/area-threshold-infinity/
* A threshold of Infinity
*
* @since 2.0
* @product highcharts highstock
*/
threshold: 0
},
/**
* @lends seriesTypes.area.prototype
*/
{
singleStacks: false,
// Return an array of stacked points, where null and missing points are
// replaced by dummy points in order for gaps to be drawn correctly in
// stacks.
getStackPoints: function (points) {
var series = this,
segment = [],
keys = [],
xAxis = this.xAxis,
yAxis = this.yAxis,
stack = yAxis.stacks[this.stackKey],
pointMap = {},
seriesIndex = series.index,
yAxisSeries = yAxis.series,
seriesLength = yAxisSeries.length,
visibleSeries,
upOrDown = pick(yAxis.options.reversedStacks, true) ? 1 : -1,
i;
points = points || this.points;
if (this.options.stacking) {
for (i = 0; i < points.length; i++) {
// Reset after point update (#7326)
points[i].leftNull = points[i].rightNull = null;
// Create a map where we can quickly look up the points by
// their X values.
pointMap[points[i].x] = points[i];
}
// Sort the keys (#1651)
H.objectEach(stack, function (stackX, x) {
// nulled after switching between
// grouping and not (#1651, #2336)
if (stackX.total !== null) {
keys.push(x);
}
});
keys.sort(function (a, b) {
return a - b;
});
visibleSeries = yAxisSeries.map(function (s) {
return s.visible;
});
keys.forEach(function (x, idx) {
var y = 0,
stackPoint,
stackedValues;
if (pointMap[x] && !pointMap[x].isNull) {
segment.push(pointMap[x]);
// Find left and right cliff. -1 goes left, 1 goes
// right.
[-1, 1].forEach(function (direction) {
var nullName = direction === 1 ?
'rightNull' :
'leftNull',
cliffName = direction === 1 ?
'rightCliff' :
'leftCliff',
cliff = 0,
otherStack = stack[keys[idx + direction]];
// If there is a stack next to this one,
// to the left or to the right...
if (otherStack) {
i = seriesIndex;
// Can go either up or down,
// depending on reversedStacks
while (i >= 0 && i < seriesLength) {
stackPoint = otherStack.points[i];
if (!stackPoint) {
// If the next point in this series
// is missing, mark the point
// with point.leftNull or
// point.rightNull = true.
if (i === seriesIndex) {
pointMap[x][nullName] = true;
// If there are missing points in
// the next stack in any of the
// series below this one, we need
// to substract the missing values
// and add a hiatus to the left or
// right.
} else if (visibleSeries[i]) {
stackedValues = stack[x].points[i];
if (stackedValues) {
cliff -= stackedValues[1] -
stackedValues[0];
}
}
}
// When reversedStacks is true, loop up,
// else loop down
i += upOrDown;
}
}
pointMap[x][cliffName] = cliff;
});
// There is no point for this X value in this series, so we
// insert a dummy point in order for the areas to be drawn
// correctly.
} else {
// Loop down the stack to find the series below this
// one that has a value (#1991)
i = seriesIndex;
while (i >= 0 && i < seriesLength) {
stackPoint = stack[x].points[i];
if (stackPoint) {
y = stackPoint[1];
break;
}
// When reversedStacks is true, loop up, else loop
// down
i += upOrDown;
}
y = yAxis.translate(y, 0, 1, 0, 1); // #6272
segment.push({
isNull: true,
plotX: xAxis.translate(x, 0, 0, 0, 1), // #6272
x: x,
plotY: y,
yBottom: y
});
}
});
}
return segment;
},
getGraphPath: function (points) {
var getGraphPath = Series.prototype.getGraphPath,
graphPath,
options = this.options,
stacking = options.stacking,
yAxis = this.yAxis,
topPath,
bottomPath,
bottomPoints = [],
graphPoints = [],
seriesIndex = this.index,
i,
areaPath,
plotX,
stacks = yAxis.stacks[this.stackKey],
threshold = options.threshold,
translatedThreshold = yAxis.getThreshold(options.threshold),
isNull,
yBottom,
connectNulls = options.connectNulls || stacking === 'percent',
// To display null points in underlying stacked series, this
// series graph must be broken, and the area also fall down to
// fill the gap left by the null point. #2069
addDummyPoints = function (i, otherI, side) {
var point = points[i],
stackedValues = stacking &&
stacks[point.x].points[seriesIndex],
nullVal = point[side + 'Null'] || 0,
cliffVal = point[side + 'Cliff'] || 0,
top,
bottom,
isNull = true;
if (cliffVal || nullVal) {
top = (nullVal ? stackedValues[0] : stackedValues[1]) +
cliffVal;
bottom = stackedValues[0] + cliffVal;
isNull = !!nullVal;
} else if (
!stacking &&
points[otherI] &&
points[otherI].isNull
) {
top = bottom = threshold;
}
// Add to the top and bottom line of the area
if (top !== undefined) {
graphPoints.push({
plotX: plotX,
plotY: top === null ?
translatedThreshold :
yAxis.getThreshold(top),
isNull: isNull,
isCliff: true
});
bottomPoints.push({
plotX: plotX,
plotY: bottom === null ?
translatedThreshold :
yAxis.getThreshold(bottom),
doCurve: false // #1041, gaps in areaspline areas
});
}
};
// Find what points to use
points = points || this.points;
// Fill in missing points
if (stacking) {
points = this.getStackPoints(points);
}
for (i = 0; i < points.length; i++) {
isNull = points[i].isNull;
plotX = pick(points[i].rectPlotX, points[i].plotX);
yBottom = pick(points[i].yBottom, translatedThreshold);
if (!isNull || connectNulls) {
if (!connectNulls) {
addDummyPoints(i, i - 1, 'left');
}
// Skip null point when stacking is false and connectNulls
// true
if (!(isNull && !stacking && connectNulls)) {
graphPoints.push(points[i]);
bottomPoints.push({
x: i,
plotX: plotX,
plotY: yBottom
});
}
if (!connectNulls) {
addDummyPoints(i, i + 1, 'right');
}
}
}
topPath = getGraphPath.call(this, graphPoints, true, true);
bottomPoints.reversed = true;
bottomPath = getGraphPath.call(this, bottomPoints, true, true);
if (bottomPath.length) {
bottomPath[0] = 'L';
}
areaPath = topPath.concat(bottomPath);
// TODO: don't set leftCliff and rightCliff when connectNulls?
graphPath = getGraphPath
.call(this, graphPoints, false, connectNulls);
areaPath.xMap = topPath.xMap;
this.areaPath = areaPath;
return graphPath;
},
// Draw the graph and the underlying area. This method calls the Series
// base function and adds the area. The areaPath is calculated in the
// getSegmentPath method called from Series.prototype.drawGraph.
drawGraph: function () {
// Define or reset areaPath
this.areaPath = [];
// Call the base method
Series.prototype.drawGraph.apply(this);
// Define local variables
var series = this,
areaPath = this.areaPath,
options = this.options,
zones = this.zones,
props = [[
'area',
'highcharts-area',
this.color,
options.fillColor
]]; // area name, main color, fill color
zones.forEach(function (zone, i) {
props.push([
'zone-area-' + i,
'highcharts-area highcharts-zone-area-' + i + ' ' +
zone.className,
zone.color || series.color,
zone.fillColor || options.fillColor
]);
});
props.forEach(function (prop) {
var areaKey = prop[0],
area = series[areaKey],
verb = area ? 'animate' : 'attr',
attribs = {};
// Create or update the area
if (area) { // update
area.endX = series.preventGraphAnimation ?
null :
areaPath.xMap;
area.animate({ d: areaPath });
} else { // create
attribs.zIndex = 0; // #1069
area = series[areaKey] = series.chart.renderer
.path(areaPath)
.addClass(prop[1])
.add(series.group);
area.isArea = true;
}
if (!series.chart.styledMode) {
attribs.fill = pick(
prop[3],
color(prop[2])
.setOpacity(pick(options.fillOpacity, 0.75))
.get()
);
}
area[verb](attribs);
area.startX = areaPath.xMap;
area.shiftUnit = options.step ? 2 : 1;
});
},
drawLegendSymbol: LegendSymbolMixin.drawRectangle
}
);
/**
* A `area` series. If the [type](#series.area.type) option is not
* specified, it is inherited from [chart.type](#chart.type).
*
* @extends series,plotOptions.area
* @excluding dataParser, dataURL, useOhlcData
* @product highcharts highstock
* @apioption series.area
*/
/**
* An array of data points for the series. For the `area` series type,
* points can be given in the following ways:
*
* 1. An array of numerical values. In this case, the numerical values will be
* interpreted as `y` options. The `x` values will be automatically
* calculated, either starting at 0 and incremented by 1, or from
* `pointStart` * and `pointInterval` given in the series options. If the
* axis has categories, these will be used. Example:
* ```js
* data: [0, 5, 3, 5]
* ```
*
* 2. An array of arrays with 2 values. In this case, the values correspond to
* `x,y`. If the first value is a string, it is applied as the name of the
* point, and the `x` value is inferred.
* ```js
* data: [
* [0, 9],
* [1, 7],
* [2, 6]
* ]
* ```
*
* 3. An array of objects with named values. The following snippet shows only a
* few settings, see the complete options set below. If the total number of
* data points exceeds the series'
* [turboThreshold](#series.area.turboThreshold), this option is not
* available.
* ```js
* data: [{
* x: 1,
* y: 9,
* name: "Point2",
* color: "#00FF00"
* }, {
* x: 1,
* y: 6,
* name: "Point1",
* color: "#FF00FF"
* }]
* ```
*
* @sample {highcharts} highcharts/chart/reflow-true/
* Numerical values
* @sample {highcharts} highcharts/series/data-array-of-arrays/
* Arrays of numeric x and y
* @sample {highcharts} highcharts/series/data-array-of-arrays-datetime/
* Arrays of datetime x and y
* @sample {highcharts} highcharts/series/data-array-of-name-value/
* Arrays of point.name and y
* @sample {highcharts} highcharts/series/data-array-of-objects/
* Config objects
*
* @type {Array<number|Array<(number|string),(number|null)>|null|*>}
* @extends series.line.data
* @product highcharts highstock
* @apioption series.area.data
*/